Bicycle.



No. 635,590. Patented Oct; 24,1899.

M. (IUINN.V

BICYCLE.

(Appication filed Apr. 7, 1899.) (No Model.)

2 Sheets- Sheet l,

No. 635,590. Patented Oct. 24, |899.

, 4M. (IUINN.

B C Y C L E (Application filed Apr. 7, 1899.)

(No Model.)

2 Sheets-Sheet 2 @wi/tween: z

Nrrn STATES Arent F Fl CF..

BICYCLE.

SPECIFICATION formingpart of Letters Patent No. 635,590, dated October24, 1899.

Application filed April 7 l 8 9 9.

To all whom t may concern:

Be it known that I, MARTIN QUINN, a citizen of the United States,residing at Denver, in the county of Arapahoe and State of Colorado,have invented certain new and useful Improvements in Bicycles; and l dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

This invention relates to bicycles, and more especially to that classtherein which embody mechanism whereby the arms of the handlebar can bemoved to assist in propulsion; and the object of the same is to effectcertain improvements in the details of the mechanism for accomplishingthis.

The invention consists in the construction hereinafter more fully setforth and claimed, and as illustrated in the accompanying drawings,wherein- Figure 1 is a side elevation of this machine complete. Fig. 2is an enlarged cross-section through the crank-hanger. Fig. 3 is a frontelevation of the head. Fig. 4 is an enlarged section through theswiveled inner ends of the arms of the handle-bar. Fig. 5 is an enlargedsectional detail of one of the handles. Fig. 6 is a plan view ot' thehead. Fig. 7 is a sectional view of the head. Fig. 7L is a similarsection at right angles to the sectional line of Fig. 7.

In the'said drawings the numeral 5 designates, broadly, the frame of anordinary reardriving safety-bicycle having cranks 7, with pedals 7, adriving-sprocket 6, and a chain 8, connecting it with the sprocket 9 ontherear axle.

Fig. 2 shows the crank-hanger with its ballbearings surrounding thecrank-shaft 7f, outside of which said shaft is bent into cranked ends,as at 7 e, and thence once again outward, as at 7b, and secured to theinner ends of the cranks 7. The bodies of the latter preferably standparallel with and over the cranked ends 7e of the crank-shaft, as shown,and are preferably deflected in their length, as best seen in Fig. 1.The driving-sprocket Gis connected with one of the cranks 7 by beingmounted at one side on the portion 7 b and having a clip 7 C at itsother side, by which it is attached to the crank near the pedal.

16 designates the head of the machine, carrying at its top a bracket 14,supporting a serial No. 712,148. (No modi-.1.)

pulley 14, and at a proper point through this bracket is a stub-shaft14d, on whose ends are mounted, as by ball-bearings, (see Fig. 4,) thearms 15 of the handle-bar, which is thus made `in two independentmembers. The outer end of each arm or member is surrounded by a collar15f, whereon is journaled, as by ball-bearings, a cup 15e, carrying thehandle or handhold 15, as best seen in Fig. 5. This permits the handlesto retain their proper position relative to the operators hands evenwhile the arms 15 are rocked up and down, as hereinafter described.

' In the inner end of each arm 15 is preferably located a nut 15A,having a serrated outer end 15C, and projecting radially from the arm isa segment 13, having a slot 16d struck on a curve around the axis. 12 isa cam of the shape best seen in Fig. 1, whose inner end has a ring 12A,serrated so as to engage the nut 15A, and 13C is a bolt or set-screwpassing through the slot 13d and engaging the body of the cam. Theseparts are in duplicate for the two arms of the handle-bar, and by theirprovision it will be clear that the cams can be set at the desiredangles to the arms 15, and after having been so set the movement of thehandles 15a will cause the cams 12 to rise and fall, each arm 15 andeach cam turning around its portion of the stub-shaft 14d.

The head 16 of the machine is preferably of an open-work pattern asviewed from the front, and in its top and bottom are rigidly mountedplugs 16d and 16, between whose inner ends is pivotally mounted, as byballbearings, an antifriction-frame. The same consists of two spiders17c and 17d, forming the other parts of the ball-bearingsjust mentioned,and to which spiders the frame-tubes 5 are fixed, parallel rods or bolts17a connecting these spiders, two pulleys 17 on each rod, nuts or thelike 17f for holding the pulleys in place,`and ball-bearings at each endof each pulley, all as best seen in Fig. 7.

I should have said that one of the cams 12 is slightly longer than theothergbut in other respects they are duplicates.

11 is a flexible connection (such as a cord or chain) which is passed atits center over the pulley 14 and leads thence out overthe cams l2, withone of its portions passing between the two upper pulleys 17 and itsother portion between thetwo lower pulleys. Its ends are connected, asby turnbuckles 11, with the IOO Shanks of two eyes l0, which arejournaled, as by ballbearings, (see Fig. 2,) on the outward portions 71of the crank-shaft.

lVith this construction of parts the rider mounts the machine and graspsthe handles. His feet are applied to the pedals, and the sprocket-wheel6 is rotated in the ordinary manner. By alternately raising and loweringthe handles, however,he causes the cams l2 to rise and fall inopposition to each other, and this causes a reciprocating motion of theconnection ll around the idle pulley 14E, so that the eyes lO assist inthe rotary movement of the sprocket-wheel (i. The clutchteeth l5c andthe slotted segments 13 are obviously for the purpose of permitting theadjustment in position of the cams, which is desirable when it isnecessary to raise or lower the handles 15"L to suit the rider. Themachine is steered in the ordinary manner, the handle-bars swinging thehead lo bodily,while the antifriction-frame within this head is fast onthe bicycle-frame and does not turn. The fact that one side of theconnection Il moves between the upper pair of pulleys and the other sidebetween the lower pair prevents these oppositely-moving sides thereoffrom interfering with each other even though the eyes 10 rise and fallas the crankshaft rotates. To offset said rise and fall and theconsequent swinging of each side of the connection the pulleys are madeof some considerable vertical height, and the fact that the connection,passes between the pulleys prevents it from wearing the interior of thehead.

l. In a bicycle the combination with a crankhanger, thecrank-shafthaving its center journaled therethrough, its ends beingcranked, and the extremities of the cranked ends turned outward, manualoperating mechanism, and connections between the latter and saidextremities; of the cranks secured to said outward ends and extendingthence over the cranked portions of said shaft inward and across itscentral portion, the sprocket-wheel mounted at one side near itsperiphery on one of the outward portions of the crank-shaft, and a clipsecured to the other side and engaging the outer end of the adjacentcrank, substantially as described.

42. In a bicycle, the combination with the main frame, the crankeddriving-shaft, the head having a bracket, and a handle-bar in two armspivotally supported by said bracket; of a pulley journaled on thebracket, a ilexible connection leading from the cranks of thedriving-shaft forward of the machine and thence backward around saidpulley, and cams on the arms of the handle-bars for alternately raisingthe opposite sides of this connection, as and for the purpose set forth.

3. In a bicycle, the combination with the head having a bracket, astub-shaft therein, a handle-bar whose separate arms are journaled onthe ends of this shaft, asegment on each arm having an arc-shaped slot,two cams each having a ring surrounding one end of the stub-shaft, and asetserew connecting each cam with the slot in the adjacent seg ment; ofthe cranked driving-shaft, and flexible connections between its cranksand the cams, as and for the purpose set forth.

4. In a bicycle, the combination with a head having a bracket, astub-shaft therein, a handle-bar in two separate arms, a nut in theinner end of each arm with aserrated face, and a bearing between thisnut and its end of the stub-shaft; of a cam each side of the brackethaving a ring surrounding the stub-shaft and serrated to coaet with thenut, means for adjustably connecting the ring and nut, the crankeddriving-shaft, and flexible connections between its cranks and the twocams, as and for the purpose set forth.

5. In a bicycle, the combination with a bracket supporting a transversestub-shaft, a handle-bar in two arms each having a forwardly-projectingsegment, a nut in the inner end of each arm, and a ball-bearing betweeneach nut and its end of the stub-shaft; of a pair of cams each having aring at its inner end surrounding one end of the stub-shaft adjacent thenut thereon, a set-screw adjustably connecting the segment and cam, apulley on the bracket, a flexible connection passing around said pulleyand over the two cams, and attaching means between the two ends of thisconnection and the cranks of the drivingshaft, as and for the purposeset forth.

6. In a bicycle, the combination with the framework having an open head,plugs at the upper and lower ends thereof, said framework beingconnected with one of such plugs, and an an ti friction-frame locatedwithin said head and axially journaled on said plugs; of a handle-barcomprising two separate arms pivot.- ally supported on the head, a camon each arm, one cam being longer than the other, and flexibleconnections leading from these cams through said antifriction-frame tothe cranks of the drivingshaft, as and for .the purpose set forth.

7. In a bicycle, the combination with the framework having an open head,and an antifriction-frame therein comprising two spiders axiallyjournaled in the head, two rods connecting the spiders, and two longpulleys journaled on each rod; of a handle-bar in two oscillating arms,cams on these arms one of which is longer than the other, and flexibleconnections leading from the cams to the cranks of the driving-shaft,one connection passing between the upper and the other between the lowerpair of Vpulleys in said antifrictioirframe, as and for the purpose setforth.

In testimony whereof I affix my signature in presence of two witnesses.

MARTIN QUINN.

IVitnesses:

M. H. LLOYD, F. B.. BYRNs.

IOC

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